Solved the system by substitution.if the system is inconsistent and has no solution,state this .if the system is dependent,write the form of the solution for any real number x.

(1) x=4y+3
2x+5y=-7

Question

Solved the system by substitution.if the system is inconsistent and has no solution,state this .if the system is dependent,write the form of the solution for any real number x.

(1) x=4y+3
     2x+5y=-7

shamil98 · Answer

Substitute the value of x into the other equation.
if the solution is all real numbers then it is dependent.
A system of equations that has at least one solution is Consistent 
a system of equations that has no solution is inconsistent 
If it has 1 or no solution, it is independent

shamil98 · Answer

2(4y+3) + 5y = -7
8y + 6 + 5y = -7
13y = -13
y= -1
x = 4(-1) + 3
x = -1
the solution is (-1,-1), and only one solution and is independent and consistent.

anonymous · Answer

And  what about this problem : 2x-y=-15
    5x+6y=5

anonymous · Answer

I solved it and this is what I got but not sure of my answer :(2.4,31)